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phenylenediamine |
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phenylenediamine [¦fen·əl‚ēn′dī·ə‚mēn] (organic chemistry) C6H4(NH2)2Also known as diaminobenzene. Any of three toxic isomeric crystalline compounds that are diamino derivatives of benzene; the ortho form, toxic colorless crystals melting at 102-104°C and soluble in alcohol, ether, water, and chloroform, is used to manufacture dyes, in photographic developers, and as a chemical intermediate; the meta form, colorless crystals unstable in air, melting at 63°C, and soluble in alcohol, ether, and water, is used to manufacture dyes, in textile dyeing, and as a nitrous acid detector; the para form, white to purple crystals melting at 147°C, soluble in alcohol and ether, and irritating to the skin, is used to manufacture dyes, in chemical analysis, and in photographic developers. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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Phenylenediamines seem to impede the reduction of viscosity of the powder rubber. patent: 5,750,625 Issued: May 12, 1998 Inventors: Robert Eugene Medsker, Raman Patel and Abdou Sabet Assigned: Advanced Elastomer Systems Process for the preparation of unsubstituted and substituted diaryl phenylenediamines U. Some of the alkylated diphenylamines are less discoloring than the phenylenediamines and find application in plastics. |
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